6884666863 has 2 divisors, whose sum is σ = 6884666864. Its totient is φ = 6884666862.

The previous prime is 6884666821. The next prime is 6884666881. The reversal of 6884666863 is 3686664886.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6884666863 - 2²¹ = 6882569711 is a prime.

It is a super-3 number, since 3×6884666863³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6884666263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3442333431 + 3442333432.

It is an arithmetic number, because the mean of its divisors is an integer number (3442333432).

Almost surely, 2^6884666863 is an apocalyptic number.

6884666863 is a deficient number, since it is larger than the sum of its proper divisors (1).

6884666863 is an equidigital number, since it uses as much as digits as its factorization.

6884666863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47775744, while the sum is 61.

The square root of 6884666863 is about 82973.8926590768. The cubic root of 6884666863 is about 1902.3670280382.

The spelling of 6884666863 in words is "six billion, eight hundred eighty-four million, six hundred sixty-six thousand, eight hundred sixty-three".